# error.log 分析 日志位置：/var/log/nginx ## 横向 ``` 2018/10/13 14:21:20 [warn] 1787#1787: *7557 an upstream response is buffered to a temporary file /var/cache/nginx/fastcgi_temp/2/00/0000000002 while reading upstream, client: 223.11.19.15, server: tmc.sxctkj.cc, request: "GET /phpinfo.php HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "tmc.sxctkj.cc" ``` ## 纵向 | 记录 | 说明 | | ------------ | ------------ | | 2018/10/13 14:21:20 | 访问时间 | | [warn] | 报警 | | 1787#1787: *7557 an upstream response is buffered to a temporary file /var/cache/nginx/fastcgi_temp/2/00/0000000002 while reading upstream, | 不知道 | | client: 223.11.19.15, | 客户端IP | | server: tmc.xxctkj.cc, | 服务端访问地址 | | request: "GET /phpinfo.php HTTP/1.1", | 访问的文件 | | upstream: "fastcgi://127.0.0.1:9000", | fastcgi上游 | | host: "tmc.sxctkj.cc" | 域名 | ## 相关 https://www.cnblogs.com/aoniboy/p/4866395.html | 错误信息 | 错误说明 | | --- | --- | | "upstream prematurely（过早的） closed connection" | 请求uri的时候出现的异常，是由于upstream还未返回应答给用户时用户断掉连接造成的，对系统没有影响，可以忽略 | | "recv() failed (104: Connection reset by peer)" | （1）服务器的并发连接数超过了其承载量，服务器会将其中一些连接Down掉； （2）客户关掉了浏览器，而服务器还在给客户端发送数据； （3）浏览器端按了Stop | | "(111: Connection refused) while connecting to upstream" | 用户在连接时，若遇到后端upstream挂掉或者不通，会收到该错误 | | "(111: Connection refused) while reading response header from upstream" | 用户在连接成功后读取数据时，若遇到后端upstream挂掉或者不通，会收到该错误 | | "(111: Connection refused) while sending request to upstream" | Nginx和upstream连接成功后发送数据时，若遇到后端upstream挂掉或者不通，会收到该错误 | | "(110: Connection timed out) while connecting to upstream" | nginx连接后面的upstream时超时 | | "(110: Connection timed out) while reading upstream" | nginx读取来自upstream的响应时超时 | | "(110: Connection timed out) while reading response header from upstream" | nginx读取来自upstream的响应头时超时 | | "(110: Connection timed out) while reading upstream" | nginx读取来自upstream的响应时超时 | | "(104: Connection reset by peer) while connecting to upstream" | upstream发送了RST，将连接重置 | | "upstream sent invalid header while reading response header from upstream" | upstream发送的响应头无效 | | "upstream sent no valid HTTP/1.0 header while reading response header from upstream" | upstream发送的响应头无效 | | "client intended to send too large body" | 用于设置允许接受的客户端请求内容的最大值，默认值是1M，client发送的body超过了设置值 | | "reopening logs" | 用户发送kill -USR1命令 | | "gracefully shutting down", | 用户发送kill -WINCH命令 | | "no servers are inside upstream" | upstream下未配置server | | "no live upstreams while connecting to upstream" | upstream下的server全都挂了 | | "SSL_do_handshake() failed" | SSL握手失败 | | "SSL_write() failed (SSL:) while sending to client" | | | "(13: Permission denied) while reading upstream" | | | "(98: Address already in use) while connecting to upstream" | | | "(99: Cannot assign requested address) while connecting to upstream" | | | "ngx_slab_alloc() failed: no memory in SSL session shared cache" | ssl_session_cache大小不够等原因造成 | | "could not add new SSL session to the session cache while SSL handshaking" | ssl_session_cache大小不够等原因造成 | | "send() failed (111: Connection refused)" | |